190678453 has 12 divisors (see below), whose sum is σ = 222791340. Its totient is φ = 162715392.

The previous prime is 190678447. The next prime is 190678507. The reversal of 190678453 is 354876091.

It can be written as a sum of positive squares in 2 ways, for example, as 106461124 + 84217329 = 10318^2 + 9177^2 .

It is a de Polignac number, because none of the positive numbers 2^k-190678453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190672453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2725 + ... + 19717.

It is an arithmetic number, because the mean of its divisors is an integer number (18565945).

Almost surely, 2^190678453 is an apocalyptic number.

It is an amenable number.

190678453 is a deficient number, since it is larger than the sum of its proper divisors (32112887).

190678453 is a wasteful number, since it uses less digits than its factorization.

190678453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17236 (or 17229 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 190678453 is about 13808.6368986950. The cubic root of 190678453 is about 575.5731681026.

The spelling of 190678453 in words is "one hundred ninety million, six hundred seventy-eight thousand, four hundred fifty-three".